Coda File System

Re: venus/kernel profiling/speed

From: Ivan Popov <>
Date: Fri, 16 Jul 2004 08:08:53 +0200
On Thu, Jul 15, 2004 at 10:53:39AM -0500, Troy Benjegerdes wrote:
> I suppose part of it is data coming from kernel -> venus -> kernel ->
> disk. Can we find a way to short-circuit the common case so the bulk
> file data doesn't have to go through copy_{to|from}_user in the kernel?

Bulk file data does not hit venus, kernel is doing disk i/o itself,
venus is seeing only open/close. So performance difference against a
local file system can be only for directory operations, which it
probably is in your test case - creation of lots of files.

Received on 2004-07-16 02:10:59